Goodwill And Intangible Assets (Components Of Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	$ 1,701.6	$ 1,850.0
Intangible assets, accumulated amortization	720.5	763.4
Acquired technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	247.1	246.7
Intangible assets, accumulated amortization	98.1	73.6
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	0.0	175.0
Intangible assets, accumulated amortization	0.0	175.0
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	285.4	285.4
Intangible assets, accumulated amortization	114.4	85.9
Licenses, patents and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	816.8	811.1
Intangible assets, accumulated amortization	264.0	227.6
Software
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	232.1	215.9
Intangible assets, accumulated amortization	178.9	151.1
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	120.2	115.9
Intangible assets, accumulated amortization	$ 65.1	$ 50.2